diff --git a/CHANGELOG.md b/CHANGELOG.md
index 22cbf130a..abbcbe8f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,12 @@
 
 -------------------------------------------------------------------------------------------------------------
 
+# 5.6.6 (2021-05-08)
+
+### 🐣新特性
+### 🐞Bug修复
+
+-------------------------------------------------------------------------------------------------------------
 # 5.6.5 (2021-05-08)
 
 ### 🐣新特性
diff --git a/README-EN.md b/README-EN.md
index 63035d14f..acb091a8a 100644
--- a/README-EN.md
+++ b/README-EN.md
@@ -122,18 +122,18 @@ Each module can be introduced individually, or all modules can be introduced by
 <dependency>
     <groupId>cn.hutool</groupId>
     <artifactId>hutool-all</artifactId>
-    <version>5.6.5</version>
+    <version>5.6.6</version>
 </dependency>
 ```
 
 ### 🍐Gradle
 ```
-compile 'cn.hutool:hutool-all:5.6.5'
+compile 'cn.hutool:hutool-all:5.6.6'
 ```
 
 ## 📥Download
 
-- [Maven Repo](https://repo1.maven.org/maven2/cn/hutool/hutool-all/5.6.5/)
+- [Maven Repo](https://repo1.maven.org/maven2/cn/hutool/hutool-all/5.6.6/)
 
 > 🔔️note:
 > Hutool 5.x supports JDK8+ and is not tested on Android platforms, and cannot guarantee that all tool classes or tool methods are available.
diff --git a/README.md b/README.md
index 16784b3ae..698eae0c6 100644
--- a/README.md
+++ b/README.md
@@ -120,20 +120,20 @@ Hutool的存在就是为了减少代码搜索成本，避免网络上参差不
 <dependency>
     <groupId>cn.hutool</groupId>
     <artifactId>hutool-all</artifactId>
-    <version>5.6.5</version>
+    <version>5.6.6</version>
 </dependency>
 ```
 
 ### 🍐Gradle
 ```
-compile 'cn.hutool:hutool-all:5.6.5'
+compile 'cn.hutool:hutool-all:5.6.6'
 ```
 
 ### 📥下载jar
 
 点击以下链接，下载`hutool-all-X.X.X.jar`即可：
 
-- [Maven中央库](https://repo1.maven.org/maven2/cn/hutool/hutool-all/5.6.5/)
+- [Maven中央库](https://repo1.maven.org/maven2/cn/hutool/hutool-all/5.6.6/)
 
 > 🔔️注意
 > Hutool 5.x支持JDK8+，对Android平台没有测试，不能保证所有工具类或工具方法可用。
diff --git a/bin/version.txt b/bin/version.txt
index bf787a305..10c11484b 100755
--- a/bin/version.txt
+++ b/bin/version.txt
@@ -1 +1 @@
-5.6.5
+5.6.6
diff --git a/docs/js/version.js b/docs/js/version.js
index 5de5e18b3..9510d472e 100644
--- a/docs/js/version.js
+++ b/docs/js/version.js
@@ -1 +1 @@
-var version = '5.6.5'
\ No newline at end of file
+var version = '5.6.6'
\ No newline at end of file
diff --git a/hutool-all/pom.xml b/hutool-all/pom.xml
index 526155d09..2b026e398 100644
--- a/hutool-all/pom.xml
+++ b/hutool-all/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-all</artifactId>
diff --git a/hutool-aop/pom.xml b/hutool-aop/pom.xml
index 6afac9fdb..768ad46f9 100644
--- a/hutool-aop/pom.xml
+++ b/hutool-aop/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-aop</artifactId>
diff --git a/hutool-bloomFilter/pom.xml b/hutool-bloomFilter/pom.xml
index 8d3ae2d4f..885f831c9 100644
--- a/hutool-bloomFilter/pom.xml
+++ b/hutool-bloomFilter/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-bloomFilter</artifactId>
diff --git a/hutool-bom/pom.xml b/hutool-bom/pom.xml
index 75822eda2..68b1f84a2 100644
--- a/hutool-bom/pom.xml
+++ b/hutool-bom/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-bom</artifactId>
diff --git a/hutool-cache/pom.xml b/hutool-cache/pom.xml
index 292efecb1..78a9a3e2a 100644
--- a/hutool-cache/pom.xml
+++ b/hutool-cache/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-cache</artifactId>
diff --git a/hutool-captcha/pom.xml b/hutool-captcha/pom.xml
index d01340c15..af02ca2c3 100644
--- a/hutool-captcha/pom.xml
+++ b/hutool-captcha/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-captcha</artifactId>
diff --git a/hutool-core/pom.xml b/hutool-core/pom.xml
index 399c328d8..5bdcaa64d 100644
--- a/hutool-core/pom.xml
+++ b/hutool-core/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-core</artifactId>
diff --git a/hutool-cron/pom.xml b/hutool-cron/pom.xml
index 092f1dec2..356cb79f4 100644
--- a/hutool-cron/pom.xml
+++ b/hutool-cron/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-cron</artifactId>
diff --git a/hutool-crypto/pom.xml b/hutool-crypto/pom.xml
index 9a7e51718..6eacf5531 100644
--- a/hutool-crypto/pom.xml
+++ b/hutool-crypto/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-crypto</artifactId>
diff --git a/hutool-db/pom.xml b/hutool-db/pom.xml
index a6b4ca900..44e6a114a 100644
--- a/hutool-db/pom.xml
+++ b/hutool-db/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-db</artifactId>
diff --git a/hutool-dfa/pom.xml b/hutool-dfa/pom.xml
index 76ff597fd..2c07bda78 100644
--- a/hutool-dfa/pom.xml
+++ b/hutool-dfa/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-dfa</artifactId>
diff --git a/hutool-extra/pom.xml b/hutool-extra/pom.xml
index 00ceb050a..50176d627 100644
--- a/hutool-extra/pom.xml
+++ b/hutool-extra/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-extra</artifactId>
diff --git a/hutool-http/pom.xml b/hutool-http/pom.xml
index 7541946ed..01cf2919f 100644
--- a/hutool-http/pom.xml
+++ b/hutool-http/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-http</artifactId>
diff --git a/hutool-json/pom.xml b/hutool-json/pom.xml
index aac6d7d87..c1a7480e5 100644
--- a/hutool-json/pom.xml
+++ b/hutool-json/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-json</artifactId>
diff --git a/hutool-log/pom.xml b/hutool-log/pom.xml
index d2685b118..b6f6e0fc1 100644
--- a/hutool-log/pom.xml
+++ b/hutool-log/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-log</artifactId>
diff --git a/hutool-poi/pom.xml b/hutool-poi/pom.xml
index 47674820d..1a5c25dcc 100644
--- a/hutool-poi/pom.xml
+++ b/hutool-poi/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-poi</artifactId>
diff --git a/hutool-script/pom.xml b/hutool-script/pom.xml
index 7f9d26628..b1cb4c3e2 100644
--- a/hutool-script/pom.xml
+++ b/hutool-script/pom.xml
@@ -8,7 +8,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-script</artifactId>
diff --git a/hutool-setting/pom.xml b/hutool-setting/pom.xml
index a8a1abfa7..54641eb53 100644
--- a/hutool-setting/pom.xml
+++ b/hutool-setting/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-setting</artifactId>
diff --git a/hutool-socket/pom.xml b/hutool-socket/pom.xml
index 961c0018b..f1df72908 100644
--- a/hutool-socket/pom.xml
+++ b/hutool-socket/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-socket</artifactId>
diff --git a/hutool-system/pom.xml b/hutool-system/pom.xml
index c5985bf03..5697ccf1a 100644
--- a/hutool-system/pom.xml
+++ b/hutool-system/pom.xml
@@ -9,7 +9,7 @@
 	<parent>
 		<groupId>cn.hutool</groupId>
 		<artifactId>hutool-parent</artifactId>
-		<version>5.6.5</version>
+		<version>5.6.6-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>hutool-system</artifactId>
diff --git a/pom.xml b/pom.xml
index 83c6d71f5..dfc6a6341 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,7 +8,7 @@
 
 	<groupId>cn.hutool</groupId>
 	<artifactId>hutool-parent</artifactId>
-	<version>5.6.5</version>
+	<version>5.6.6-SNAPSHOT</version>
 	<name>hutool</name>
 	<description>Hutool是一个小而全的Java工具类库，通过静态方法封装，降低相关API的学习成本，提高工作效率，使Java拥有函数式语言般的优雅，让Java语言也可以“甜甜的”。</description>
 	<url>https://github.com/looly/hutool</url>